US3488465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor protecting switching devices with raised contacts on coaxial electrodes,and air blast extinction means
Assignee: Balfour Beatty PLC
•
Filing: 1966-09-27
•
Granted: 1970-01-06
•
Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 William John Joyce
- 👤 Herbert Joseph Shapcott Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:20
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/02; H01T1/08; H02; H02H; H02H7/00; H02H7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1914875A
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US2290086A
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US2414308A
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US2598914A
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US2760121A
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US2896104A
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US3223893A
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US3229145A
Cited
US3253177A
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US3350529A
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US3376458A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |